Robinsons Land said it would soon install solar panels in 2 Cebu malls, one in Tagum City and another in Palawan. Currently, 11 Robinsons malls use solar and the company hopes to finish nearly half of its solar projects by the end of the year.

"As one of the biggest consumers of electricity, having our own renewable source of clean energy allows us to reduce our carbon footprint and do our share in protecting the environment by using less electricity produced by the burning of fossil fuels," Robinsons Land president Frederick Go said in a statement.

Rival SM announced last month that it installed solar panels on its malls in Cauayan, Cabanatuan and Iloilo and similar facilities would be installed in Trece Martires, Seaside City Cebu, Dasmarinas, Olongapo, and Tuguegarao Downtown.

SM installed its first "green roof" in 2014 on SM North EDSA, its first supermall branch.